I said possibly because there may be some way of teasing out a result from isotopes and such.
I entertain the possibility that there may have been permafrost thaws at the end of each ice age.
skepticalscience.com: We've been through climate changes before
Quote:
Humans have been through climate changes before- but mostly cold ones and mostly in our far distant past.
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Previous major global climate changes were glacial cycles that happened long before human civilization developed.
The human species evolved during the last 2.5 million years. Our far distant ancestors survived through multiple gradual cycles of cold ice ages, but did not experience any previous "hot ages."
We Homo sapiens in our current form appeared only about 200,000 years ago. So our species has survived two ice ages. In each ice age global temperatures were colder by 4 °C. The warmest period ever experienced by early humans was about 1 °C warmer (global average) than today. That period occured between the two most recent ice ages, 120,000 years ago (Eemian). Over the next 100,000 years temperatures gradually decreased into a new ice age. During that colder period humans began to expand out of Africa and across the globe. Ever since the Eemian much cooler temperatures have been the norm.
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